// Copyright (c) 2012 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.

#include <stdint.h>

#include "base/environment.h"
#include "base/files/file_util.h"
#include "base/sys_info.h"
#include "base/threading/platform_thread.h"
#include "base/time/time.h"
#include "build/build_config.h"
#include "testing/gtest/include/gtest/gtest.h"
#include "testing/platform_test.h"

typedef PlatformTest SysInfoTest;
using base::FilePath;

TEST_F(SysInfoTest, NumProcs)
{
    // We aren't actually testing that it's correct, just that it's sane.
    EXPECT_GE(base::SysInfo::NumberOfProcessors(), 1);
}

TEST_F(SysInfoTest, AmountOfMem)
{
    // We aren't actually testing that it's correct, just that it's sane.
    EXPECT_GT(base::SysInfo::AmountOfPhysicalMemory(), 0);
    EXPECT_GT(base::SysInfo::AmountOfPhysicalMemoryMB(), 0);
    // The maxmimal amount of virtual memory can be zero which means unlimited.
    EXPECT_GE(base::SysInfo::AmountOfVirtualMemory(), 0);
}

TEST_F(SysInfoTest, AmountOfFreeDiskSpace)
{
    // We aren't actually testing that it's correct, just that it's sane.
    FilePath tmp_path;
    ASSERT_TRUE(base::GetTempDir(&tmp_path));
    EXPECT_GE(base::SysInfo::AmountOfFreeDiskSpace(tmp_path), 0)
        << tmp_path.value();
}

TEST_F(SysInfoTest, AmountOfTotalDiskSpace)
{
    // We aren't actually testing that it's correct, just that it's sane.
    FilePath tmp_path;
    ASSERT_TRUE(base::GetTempDir(&tmp_path));
    EXPECT_GT(base::SysInfo::AmountOfTotalDiskSpace(tmp_path), 0)
        << tmp_path.value();
}

#if defined(OS_WIN) || defined(OS_MACOSX)
TEST_F(SysInfoTest, OperatingSystemVersionNumbers)
{
    int32_t os_major_version = -1;
    int32_t os_minor_version = -1;
    int32_t os_bugfix_version = -1;
    base::SysInfo::OperatingSystemVersionNumbers(&os_major_version,
        &os_minor_version,
        &os_bugfix_version);
    EXPECT_GT(os_major_version, -1);
    EXPECT_GT(os_minor_version, -1);
    EXPECT_GT(os_bugfix_version, -1);
}
#endif

TEST_F(SysInfoTest, Uptime)
{
    base::TimeDelta up_time_1 = base::SysInfo::Uptime();
    // UpTime() is implemented internally using TimeTicks::Now(), which documents
    // system resolution as being 1-15ms. Sleep a little longer than that.
    base::PlatformThread::Sleep(base::TimeDelta::FromMilliseconds(20));
    base::TimeDelta up_time_2 = base::SysInfo::Uptime();
    EXPECT_GT(up_time_1.InMicroseconds(), 0);
    EXPECT_GT(up_time_2.InMicroseconds(), up_time_1.InMicroseconds());
}

#if defined(OS_MACOSX) && !defined(OS_IOS)
TEST_F(SysInfoTest, HardwareModelName)
{
    std::string hardware_model = base::SysInfo::HardwareModelName();
    EXPECT_FALSE(hardware_model.empty());
}
#endif

#if defined(OS_CHROMEOS)

TEST_F(SysInfoTest, GoogleChromeOSVersionNumbers)
{
    int32_t os_major_version = -1;
    int32_t os_minor_version = -1;
    int32_t os_bugfix_version = -1;
    const char kLsbRelease[] = "FOO=1234123.34.5\n"
                               "CHROMEOS_RELEASE_VERSION=1.2.3.4\n";
    base::SysInfo::SetChromeOSVersionInfoForTest(kLsbRelease, base::Time());
    base::SysInfo::OperatingSystemVersionNumbers(&os_major_version,
        &os_minor_version,
        &os_bugfix_version);
    EXPECT_EQ(1, os_major_version);
    EXPECT_EQ(2, os_minor_version);
    EXPECT_EQ(3, os_bugfix_version);
}

TEST_F(SysInfoTest, GoogleChromeOSVersionNumbersFirst)
{
    int32_t os_major_version = -1;
    int32_t os_minor_version = -1;
    int32_t os_bugfix_version = -1;
    const char kLsbRelease[] = "CHROMEOS_RELEASE_VERSION=1.2.3.4\n"
                               "FOO=1234123.34.5\n";
    base::SysInfo::SetChromeOSVersionInfoForTest(kLsbRelease, base::Time());
    base::SysInfo::OperatingSystemVersionNumbers(&os_major_version,
        &os_minor_version,
        &os_bugfix_version);
    EXPECT_EQ(1, os_major_version);
    EXPECT_EQ(2, os_minor_version);
    EXPECT_EQ(3, os_bugfix_version);
}

TEST_F(SysInfoTest, GoogleChromeOSNoVersionNumbers)
{
    int32_t os_major_version = -1;
    int32_t os_minor_version = -1;
    int32_t os_bugfix_version = -1;
    const char kLsbRelease[] = "FOO=1234123.34.5\n";
    base::SysInfo::SetChromeOSVersionInfoForTest(kLsbRelease, base::Time());
    base::SysInfo::OperatingSystemVersionNumbers(&os_major_version,
        &os_minor_version,
        &os_bugfix_version);
    EXPECT_EQ(0, os_major_version);
    EXPECT_EQ(0, os_minor_version);
    EXPECT_EQ(0, os_bugfix_version);
}

TEST_F(SysInfoTest, GoogleChromeOSLsbReleaseTime)
{
    const char kLsbRelease[] = "CHROMEOS_RELEASE_VERSION=1.2.3.4";
    // Use a fake time that can be safely displayed as a string.
    const base::Time lsb_release_time(base::Time::FromDoubleT(12345.6));
    base::SysInfo::SetChromeOSVersionInfoForTest(kLsbRelease, lsb_release_time);
    base::Time parsed_lsb_release_time = base::SysInfo::GetLsbReleaseTime();
    EXPECT_DOUBLE_EQ(lsb_release_time.ToDoubleT(),
        parsed_lsb_release_time.ToDoubleT());
}

TEST_F(SysInfoTest, IsRunningOnChromeOS)
{
    base::SysInfo::SetChromeOSVersionInfoForTest("", base::Time());
    EXPECT_FALSE(base::SysInfo::IsRunningOnChromeOS());

    const char kLsbRelease1[] = "CHROMEOS_RELEASE_NAME=Non Chrome OS\n"
                                "CHROMEOS_RELEASE_VERSION=1.2.3.4\n";
    base::SysInfo::SetChromeOSVersionInfoForTest(kLsbRelease1, base::Time());
    EXPECT_FALSE(base::SysInfo::IsRunningOnChromeOS());

    const char kLsbRelease2[] = "CHROMEOS_RELEASE_NAME=Chrome OS\n"
                                "CHROMEOS_RELEASE_VERSION=1.2.3.4\n";
    base::SysInfo::SetChromeOSVersionInfoForTest(kLsbRelease2, base::Time());
    EXPECT_TRUE(base::SysInfo::IsRunningOnChromeOS());

    const char kLsbRelease3[] = "CHROMEOS_RELEASE_NAME=Chromium OS\n";
    base::SysInfo::SetChromeOSVersionInfoForTest(kLsbRelease3, base::Time());
    EXPECT_TRUE(base::SysInfo::IsRunningOnChromeOS());
}

TEST_F(SysInfoTest, GetStrippedReleaseBoard)
{
    const char* kLsbRelease1 = "CHROMEOS_RELEASE_BOARD=Glimmer\n";
    base::SysInfo::SetChromeOSVersionInfoForTest(kLsbRelease1, base::Time());
    EXPECT_EQ("glimmer", base::SysInfo::GetStrippedReleaseBoard());

    const char* kLsbRelease2 = "CHROMEOS_RELEASE_BOARD=glimmer-signed-mp-v4keys";
    base::SysInfo::SetChromeOSVersionInfoForTest(kLsbRelease2, base::Time());
    EXPECT_EQ("glimmer", base::SysInfo::GetStrippedReleaseBoard());
}

#endif // OS_CHROMEOS
